<!doctype html>
<head>
  <style>
    /* styles to be added in next listing */
  </style>
</head>

<body>
  <div class="box one positioned">
    one
    <div class="absolute">nested</div>
  </div>
  <div class="box two positioned">two</div>
  <div class="box three">three</div>
</body>
